In June 2018, the Islamic State in West Africa (ISWA) leader, Abu Mus’ab al-Barnawi, released a history of his jihadist movement. In 2017, the Ansaru leader, under the pseudonym Abu Usama al-Ansari, also released his own history, while Abubakar Shekau released a book in the name of the Boko Haram faction he currently leads.